While following an "interesting" question on Stack Overflow, I had a look at the asker of that question and found that his activity tab was filled with short and meaningless comments.
The user has an extremely high comment-noise level;
good example seem to be a very common comment which repeat on nearly every answer he receives on his questions. While I know that we should tell people to stop that and use the voting mechanism instead, I wondered if I'm allowed to flag that user and request a major cleanup of all his comments.
And yes, I'm aware that's a pretty rare and tiny problem on SO, but I'm wondering if we should lay that into the hands of a Moderator, educate the user or leave him be.
Edit: I didn't mean a complete deletion of all the users comments, but instead a manual cleanup done by a Moderator. The main intention was to not clutter up the comment-flag-queue with dozens and dozens of flags for those comments.